# Number Bonds to 20

Welcome to the Math Salamanders Number Bonds to 20 Worksheets.

Here you will find a wide range of free printable Math Fact Worksheets, which will help your child learn their number bonds and pairs for each number from 11 to 20.

## Number Bonds to 20

#### What is a number bond to 20?

We can look at number bonds to 20 as pairs of numbers with a total of 20.

However, knowing your number bonds to 20 is more than just being able to quickly recite pairs that have a total of 20.

We would also expect children to know all the facts related to the pair of numbers that have a total of 20.

In other words:

• If we know that 13 + 7 = 20, we should also know
• 7 + 13 = 20
• 20 - 13 = 7
• 20 - 7 = 13
• And if we switch the equation on either side of the equals sign, we could add to this...
• 20 = 13 + 7
• 20 = 7 + 13
• 7 = 20 - 13
• 13 = 20 - 7

So there would be a total of 8 facts for every number bond fact that we would want children to be able to find!

The sheets below will help you child to learn their number bonds to 20 and accompanying facts!

#### Prior Learning

Your child needs to be able to know their number bonds to 10 before they learn their number bonds to 20.

## Numbers Bonds to 20 Worksheets

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### Number Bonds to 20 Online Quiz

Our quizzes have been created using Google Forms.

At the end of the quiz, you will get the chance to see your results by clicking 'See Score'.

This will take you to a new webpage where your results will be shown. You can print a copy of your results from this page, either as a pdf or as a paper copy.

For incorrect responses, we have added some helpful learning points to explain which answer was correct and why.

We do not collect any personal data from our quizzes, except in the 'First Name' field which is optional. We collect this information so that if a class of students is taking a quiz, the individual results can be recorded along with the first name of the student.

We also collect the results from the quizzes which we use to help us to develop our resources.

If the error message 'File Unavailable' should appear in a pop-up window with a 'RELOAD' option in the bottom right corner of the screen:

• click anywhere on the screen but not inside the pop-up window
• the pop-up window should disappear and you should be able to see your results.
• NB. This error is a Google error in the Google Quiz app - it is currently unresolved!

This quick quiz tests your knowledge of number bonds to 20.

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How to Print or Save these sheets

Need help with printing or saving?
Follow these 3 easy steps to get your worksheets printed out perfectly!

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